This adhesive tape is characterized by comprising: a plurality of fibers; and binding resin mixed with the plurality of fibers, wherein the fibers are arranged side-by-side in a first direction and extend longitudinally in a second direction perpendicular to the first direction. The adhesive tape stretches elastically in a horizontal direction while reliably supporting a flexible display unit, and thus can deform according to the bending deflection of the flexible display unit. Therefore, the adhesive tape can reliably maintain a coupled state with a support frame that supports the rear surface of the flexible display unit.